Wear-indicating piercer pin for explosively-operated tools

Details Wear-indicating piercer pin for explosively-operated tools Wear-indicating piercer pin for explosively-operated tools

1988-03-04

1989-04-04

Brown, David H.

Ordnance

Explosive operated apparatus

42 6901, F41F 1300, F41C 2700, F41D 1104, F41D 1116

Patent

active

048174939

ABSTRACT:
A wear indicating piercer pin for use with explosively-operated industrial tools. More particularly, the piercer pin includes a passage extending from the rear face to a location just short of the leading tip end so that upon the tip end wearing down, the passage will become exposed.

REFERENCES:
patent: 552699 (1896-01-01), Richardson
patent: 2421769 (1947-06-01), Wolfe
patent: 2491516 (1949-12-01), Piggot et al.
patent: 3292363 (1966-12-01), Wahl

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